TY  - BOOK
T1  - Geologic structure map of the northwestern Illinois zinc-lead district,
DA  - 1956.
CY  - Urbana,
AU  - Bradbury, James C.
CN  - QE105
CN  - QE105
PP  - Urbana,
PY  - 1956.
N1  - Cover title.
ID  - 17387
KW  - Geology, Structural.
KW  - Geology
KW  - Geology
TI  - Geologic structure map of the northwestern Illinois zinc-lead district,
ER  -